Pull all the rockwork.
See how many gallons your sump goes down.
Put all the rockwork back in.
This can be a surprise if your return pump starts sucking air.
---I have ten gallons of rock.
Srsly, this has been a day! We are doing some major tank revision. Thank goodness for help.
See how many gallons your sump goes down.
Put all the rockwork back in.
This can be a surprise if your return pump starts sucking air.
---I have ten gallons of rock.
Srsly, this has been a day! We are doing some major tank revision. Thank goodness for help.
